KR101803007B1 - Light emitting diode illumination lamp - Google Patents

Abstract

The present invention relates to an LED lighting lamp, and provides an LED lighting lamp in which a power conversion unit is mounted on a base member on both sides of an LED module. The present invention provides an LED module including at least one LED element, and a substrate on which an input wiring and an output wiring are formed; A heat dissipating member formed on a lower surface of the LED module; A first circuit unit disposed on one side of the LED module and adapted to receive and convert external AC power and a second circuit unit disposed on the other side of the LED module and configured to apply the converted power to the LED module; And a pair of base members disposed on both sides of the LED module and having the first circuit portion and the second circuit portion mounted thereon, respectively. According to the above-described structure, it is possible to maximize the light emitting area while using the heat dissipating member to simultaneously satisfy the heat dissipation characteristics and the light emitting characteristics, thereby improving the reliability and characteristics of the product, It is possible to prevent the entrance of the light to the outside and further improve the luminous efficiency emitted to the outside.

Description

[0001] The present invention relates to a light emitting diode (LED)

The present invention relates to an LED lighting lamp, and more particularly to an LED lighting lamp in which a power conversion unit is mounted on a base member on both sides of an LED module.

Generally, most of the lighting devices used in daily life are fluorescent lamps and incandescent lamps using commercial AC power. Particularly, a fluorescent lamp having excellent power efficiency and having a higher illuminance is being used more.

In recent years, there has been an increasing number of cases in which a high-brightness LED element having a life span of 100,000 hours and being semi-permanent and having low power consumption is applied to a fluorescent lamp for such a purpose. Such a high- .

1 is an exploded perspective view of a conventional fluorescent lamp type LED lighting lamp.

The fluorescent lamp type LED lighting lamp 1 includes an LED module 11 constituted by connecting a plurality of LED elements 111 to a substrate 112, a power module 12 for converting an external AC power source to a DC power source, an LED module 11 And the end cap 14 protruding from the connection pin 141 fixed to both ends of the housing 13 and inserted into the fluorescent lamp socket.

The fluorescent lamp type LED lighting lamp 1 configured as described above is constructed such that the power module 12 is mounted on the board 112 and the heat radiating fins 131 are formed on the entire lower surface of the LED module 11, The heat can be effectively cooled.

2 is a side sectional view (a) and a sectional view (b) of another conventional fluorescent lamp type LED lighting lamp.

The fluorescent lamp type LED lighting lamp 2 has a power module 24 for mounting the LED element 22 on the upper surface of the LED substrate 21 and for driving the LED element 22 on the rear surface, And the connection pin 26 of the terminal cap 25 is coupled to the fluorescent lamp socket.

The fluorescent lamp type LED lighting lamp 2 configured as described above is formed on the lower surface of the substrate 21 so that the light emitting area of the LED module 22 is maximized and the luminous efficiency can be improved.

However, in the conventional fluorescent lamp type LED lighting lamp, when the power module is disposed on the upper surface of the LED module for the purpose of heat dissipation, the light emitting area of the fluorescent lamp having a limited size is relatively reduced, When the power module is disposed on the lower surface of the LED module for the purpose, the heat dissipating function is very weak because the heat dissipating member such as the heat sink can not be filled on the lower surface of the LED module having a lot of heat, There is a contradiction in that the efficiency is lowered and the product life is shortened.

In order to solve the problems of the related art as described above, the present invention provides an LED lighting lamp capable of maximizing a light emitting area while using a heat dissipating member.

According to an aspect of the present invention, there is provided an LED module including at least one LED element, and a substrate on which an input wiring and an output wiring are formed. A heat dissipating member formed on a lower surface of the LED module; A first circuit unit disposed on one side of the LED module and adapted to receive and convert external AC power and a second circuit unit disposed on the other side of the LED module and configured to apply the converted power to the LED module; And a pair of base members disposed on both sides of the LED module and having the first circuit portion and the second circuit portion mounted thereon, respectively.

Preferably, the first circuit portion and the second circuit portion may be electrically connected through the input wiring.

Preferably, the second circuit part may apply power to the LED module through the output wiring.

Preferably, the first circuit unit may include an input terminal to which the external AC power is applied, a transforming unit that transforms the applied AC power, and a substrate on which the input terminal is formed and on which the transforming unit is mounted.

Preferably, the second circuit part includes a rectifying part for converting the transformed AC power into a DC power, an output terminal for applying the rectified DC power to the LED module, an input terminal connected to the first circuit part, And a substrate on which the rectifying unit is mounted.

Preferably, at least one groove portion may be formed on an outer circumferential surface of each of the first circuit portion and the second circuit portion.

Preferably, the upper surface of the first circuit portion and the second circuit portion may be coated with an insulating material.

Preferably, the base member may include a stopper for fixing the LED module, and a step portion on which the first circuit portion and the second circuit portion are mounted.

Preferably, the stopper may include protrusions extending to the step portion and protruding into the base member.

The present invention may further include a reflection member disposed between the first circuit unit or the second circuit unit and the LED module.

Preferably, the heat dissipating member is made of a thermally conductive plastic.

The LED lighting lamp according to the present invention can improve the reliability and characteristics of the product by simultaneously satisfying the heat radiation characteristic and the light emission characteristic by maximizing the light emitting area while using the heat radiation member by mounting the power conversion unit on the base member on both sides of the LED module There is an effect.

Further, according to the present invention, the light emitted from the LED module can be prevented from entering into the base member through the reflective member between the first circuit unit or the second circuit unit and the LED module, thereby further improving the luminous efficiency emitted to the outside.

1 is an exploded perspective view of a conventional fluorescent lamp type LED lighting lamp,
2 is a side sectional view (a) and a sectional view (b) of another conventional fluorescent lamp type LED lighting lamp,
3 is an exploded perspective view of an LED lighting lamp according to an embodiment of the present invention,
4 is a plan view of the LED module of Fig. 1,
Fig. 5 is a rear view of the first circuit part (a) and the second circuit part (b) in Fig. 1,
6 is a block diagram showing the detailed configuration of the power conversion unit,
7 is an enlarged sectional view of the base member of Fig. 1,
8 is a cross-sectional view of an LED lighting lamp according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, the present invention will be described in detail with reference to preferred embodiments and accompanying drawings, which will be easily understood by those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

First, an LED lighting lamp according to an embodiment of the present invention will be described with reference to FIGS. 3 to 7. FIG.

FIG. 3 is a disassembled perspective view of an LED lighting lamp according to an embodiment of the present invention, FIG. 4 is a plan view of the LED module of FIG. 1, and FIG. 5 is a cross- Fig. 6 is a block diagram showing a detailed configuration of the power conversion unit, and Fig. 7 is an enlarged cross-sectional view of the base member of Fig.

The LED lighting lamp 100 includes an LED module 110 including a substrate 112 and at least one LED element 114, a heat dissipating member 120 formed on the lower surface of the LED module 110, an LED module 110, A pair of base members 140 formed on both sides of the LED module 110 and an external AC power input thereto and applying the converted external AC power to the LED module 110, And a power conversion unit 200 having a first circuit unit 150 and a second circuit unit 160.

The LED module 110 includes a substrate 112 on which an LED element 114, an input wiring 116 and an output wiring 118 are formed, and at least one LED element 114 that emits light as a light source. Here, the array of the LED elements 114 are arranged in the same direction with respect to both ends of the substrate and connected in series, or they are connected in parallel to each other at the opposite ends with the center point as a center.

The substrate 112 is composed of at least one array of LED elements 114 on the front surface and a metal PCB for dissipating heat primarily emitted from the LED elements 114 on the rear surface. Depending on the structure and characteristics of the fluorescent lamp, it may be composed of other material PCBs such as FR-4 or CEM PCB. 4, at least one LED element 114 is mounted on the central portion of the substrate 112, and the first circuit portion 150 and the second circuit portion 160, which will be described later, are electrically connected to each other And input terminals 116a are formed at both ends of the input terminals 116a.

An output wiring 118 for electrically connecting the second circuit part 160 is formed between the input wiring 116 and the LED element 114 in the longitudinal direction along both sides of the substrate 112, And output terminals 118a and 118b are formed on the side where the first electrode 160 is disposed. This output wiring 118 is electrically connected to both ends of the array of LED elements 114 with a point that is divided relative to the center point of the array of at least one LED element 114. That is, the output wiring 118 connected to the upper output terminal 118a is formed to extend at both ends in the longitudinal direction of the substrate 112 and is electrically connected to both ends of the array of the LED elements 114. The lower output terminal 118b, The output wiring 118 connected to the LED element 114 is formed to extend to the center point of the array of LED elements 114 and is electrically connected to the center point of the array of LED elements 114.

Although the present embodiment has been described as being connected to the arrangement of the LED elements 114 in which the output wiring 118 is configured in parallel, it is not limited thereto and can be changed according to the arrangement of the LED elements 114 and the design of the substrate 112, For example, an output wiring 118 may be electrically connected across the array of LED elements 114 configured in series.

7, the input terminal 116a is electrically connected to the input terminal 156 of the first circuit unit 150 and the input terminal 156a of the second circuit unit 160 through the connection wiring 159 And the output terminal 118a is electrically connected to the output terminal 166 of the second circuit unit 160 through the connection wiring 159. [

The heat dissipation member 120 is formed on the bottom surface of the substrate 112 of the LED module 110 as a heat sink and has a heat dissipation fin for discharging heat generated from the LED module 110 to the outside, Is made of excellent aluminum (Al). The material of the heat dissipation member 120 is not limited to this. For example, the heat dissipation member 120 may be made of a thermal diffusion plastic so as to improve the insulation property while maintaining the heat dissipation property, thereby securing the stability of the product.

The light diffusion cover 130 is formed as a bar like a fluorescent lamp on the LED module 110 to reflect light emitted from the LED module 110 to the outside. The light diffusion cover 130 is made of polycarbonate (PC).

The pair of base members 140 are disposed at both ends of the LED module 110 to fix the LED module 110, the heat radiation member 120 and the light diffusion cover 130, (160) are respectively mounted. 7, the base member 140 includes a step portion 142, an LED module 110, a heat dissipating member 120, and a heat dissipation member 120 on which the first circuit portion 150 or the second circuit portion 160 is mounted. A stopper 143 for fixing the light diffusion cover 130 and a protrusion 144 extending from the stopper 143 to the step portion 142.

The substrate 151 and 161 of the first circuit unit 150 or the second circuit unit 160 are mounted on the step unit 142 and the stopper 143 is mounted on the first circuit unit 150 or the second circuit unit 160, The heat dissipating member 120 and the light diffusion cover 130 are fixed in order to secure a mounting space of the LED module 110. The protrusion 144 has grooves 154 and 164 formed in the substrates 151 and 161 So that the first circuit unit 150 or the second circuit unit 160 is fixed inside the base member 140. As described above, the LED module 110, the heat radiation member 120, and the light diffusion cover 130 are spaced apart from each other by a predetermined distance, Occurrence of a short circuit or the like can be prevented.

6, the power conversion unit 200 receives external AC power and converts the DC power into a DC power suitable for driving the LED module 110. The power conversion unit 200 includes a filter unit 210 for removing noise from an AC power source, A transforming unit 220 for transforming the AC power, a rectifying unit 230 for rectifying the transformed AC power to a DC power source, and a smoothing unit 240 for removing ripples of the rectified DC power. In the present embodiment, the power converter 200 has been described as a basic configuration, but the present invention is not limited thereto. Various configurations for actively controlling the LED lighting lamp 100 may be used. For example, (Switching Mode Power Supply; SMPS).

The power conversion unit 200 includes a first circuit unit 150 as an input terminal and a second circuit unit 160 as an output terminal, which are mounted in a space in the base member 140, Are mounted on the base member 140 on both sides. The first circuit unit 150 and the second circuit unit 160 are electrically connected through the input wiring 116 formed on the substrate 112.

The first circuit unit 150 is disposed on one side of the LED module 110 and is converted by applying external AC power. The first circuit unit 150 includes a substrate 151, an input terminal 156 formed on the substrate 151, a power conversion unit 200 (Not shown). The substrate 151 has a shape that can be inserted into the base member 140. The substrate 151 is preferably formed in a circular shape and has a through hole 152 through which the connection pin 146 is inserted, At least one groove 154 is formed. An input terminal 156 to which external AC power is applied is formed on one surface of the substrate 151, and a circuit element 158 having an input terminal function is mounted on the back surface of the substrate 151. Here, the circuit element 158 mounted on the substrate 151 is a part of the power conversion section 200, and includes, for example, a filter section 210 for removing noise from the input AC power source, And may be the transforming unit 220.

The second circuit unit 160 is disposed on the other side of the LED module 110 and applies the transformed power to the LED module 110 in the first circuit unit 150. The second circuit unit 160 includes a substrate 161, An input terminal 156a and an output terminal 166, and a circuit element 168 constituting a power conversion section 200. [ The substrate 161 has a shape that can be inserted into the base member 140. The substrate 161 is preferably formed in a circular shape and has a through hole 162 through which the connection pin 146 is inserted, At least one groove portion 164 is formed. An input terminal 156a connected to the first circuit unit 150 and an output terminal 166 for applying power converted by the LED module 110 are formed on one surface of the substrate 161. An output terminal function The circuit element 168 is mounted. Here, the circuit element 168 mounted on the substrate 161 is a part of the power conversion section 200, and includes, for example, a rectification section 230 for converting a transformed AC power into a DC power, And may be a smoothing unit 240 that removes the light.

The input terminals 156 and 156a of the first circuit unit 150 and the second circuit unit 160 are connected to the input terminal 116a of the substrate 112 via the connection wiring 159 and the second circuit unit 160 Is connected to the output terminal 118a of the substrate 112 of the LED module 110 through the connection wiring 159. [ The first circuit unit 150 and the second circuit unit 160 are connected to each other along the input wiring 116 formed on the substrate 112 of the LED module 110 and the second circuit unit 160 is formed on the substrate 112 And is connected to the LED module 110 along the output wiring 118.

7, the first circuit part 150 is configured such that the groove part 154 is fitted into the protrusion part 144 and inserted into the base member 140, and the fluidity is controlled by the at least one groove part 154 Is limited. The connection pin 146 is inserted into the base member 140 and connected to the first circuit unit 150 or the second circuit unit 160 through the pin connection wiring 148. 7, it is shown that the connection pin 146 is not inserted into the through holes 152 and 162 of the first circuit part 150 or the second circuit part 160. However, the first circuit part 150 or the second circuit part 160 and / It can be designed and modified in accordance with the structure of the connection pin 146.

The upper surface of the first circuit unit 150 and the second circuit unit 160 are coated with an insulating material so that interference occurs between the circuit elements 158 and 168 constituting the circuits on the substrates 151 and 161 and the LED module 110 Insulating material is coated on the entire upper surface of the substrates 151 and 161 so as not to be formed.

In the present embodiment, the circuit corresponding to the input stage is configured in the first circuit unit 150 and the circuit corresponding to the output stage is configured in the second circuit unit 160. However, the present invention is not limited to this, The circuit configuration, the circuit configuration of the first circuit unit 150, and the circuit configuration of the second circuit unit 160.

With this configuration, the LED lighting lamp 100 can maximize the light emitting area while using the heat dissipating member, thereby simultaneously satisfying the heat dissipation characteristics and the light emitting characteristics, thereby improving the protection and characteristics of the product.

The assembly process and operation of the LED lighting lamp 100 according to the embodiment of the present invention will be described.

The LED lighting lamp 100 mounts the first circuit unit 150 or the second circuit unit 160 constituting the power conversion unit 200 in the pair of base members 140. The recesses 154 and 164 of the substrates 151 and 161 The first circuit portion 150 or the second circuit portion 160 is mounted on the step portion 142 when the protruding portion 144 is fitted into the base member 140 and is pushed to the step portion 142. The flowability of the first circuit unit 150 or the second circuit unit 160 in the base member 140 is restricted by the groove portions 154 and 164 of the substrates 151 and 161 and the protrusions 144 of the base member 140. Then, the connection pin 146 is inserted into the base member 140 and electrically connected to the first circuit part 150 through the pin connection wiring 148. Next, the base member 140 is inserted and fixed to both sides of the LED module 110, the heat radiation member 120, and the light diffusion cover 130. These are fixed by the stopper 143 in the base member 140, A predetermined interval is maintained so as not to interfere with the circuit unit 150 or the second circuit unit 160.

When the external AC power is applied to the LED lighting lamp 100 in the assembled state, the first circuit unit 150 transforms the AC power and transmits the AC power through the input wiring 116 of the LED module 110 substrate 112 And the second circuit unit 160 rectifies the transformed power to the direct current power and supplies the rectified power to the LED module 110 through the output terminal 118a of the substrate 112 of the LED module 110 The LED module 110 emits light and the LED illumination lamp 100 lights up.

8 is a cross-sectional view of an LED lighting lamp according to another embodiment of the present invention.

The present embodiment is the same as the first embodiment except for the reflective member 870 that reflects the light emitted from the LED module 110 so as not to enter the base member 140, and thus a detailed description thereof will be omitted.

The LED illumination lamp 800 further includes a reflective member 870 disposed between the first circuit portion 150 or the second circuit portion 160 and the LED module 110 within the base member 140.

The reflective member 870 may be made of reflective glass, aluminum, or stainless steel, and may be fixed by the stopper 143 of the base member 140. 8, the reflecting member 870 is formed in a plate-like semi-circular shape, and is disposed between and fixed by the stopper 143 and the LED module 110 or the light diffusion cover 130.

Although the material and shape of the reflective member 870 are limited in the present embodiment, the present invention is not limited thereto, and may be made of materials and structures that prevent light emitted from the LED module 110 from entering the base member 140 The lower surface of the plate-like semicircular shape is bent so that the lower surface of the bent surface is adhered to the upper surface or the lower surface of the LED module 110 or bent along the arc, It can be adhered to the inner side.

According to this configuration, the LED illumination lamp 800 can prevent the light emitted from the LED module 110 from entering the inside of the base member 140, thereby further improving the luminous efficiency emitted to the outside.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Do.

100: LED lighting lamp 110: LED module
112: substrate 114: LED element
116: input wiring 116a, 156, 156a: input terminal
118: output wiring 118a, 166: output terminal
120: heat radiation member 130: light diffusion cover
140: base member 142:
143: stopper 144: projection
146: connection pin 148: pin connection wiring
150: first circuit part 160: second circuit part
151, 161: Substrate 152, 162: Through hole
154, 164: grooves 158, 168:
159: connection wiring 200: power conversion section
210: filter unit 220: transformer
230: rectification part 240: smooth part
870: reflective member

Claims (11)

An LED module including at least one LED element, and a substrate on which an input wiring and an output wiring are formed;
A heat dissipating member formed on a lower surface of the LED module;
A first circuit unit disposed on one side of the LED module and adapted to receive and convert external AC power and a second circuit unit disposed on the other side of the LED module to apply the converted AC power to the LED module, ; And
And a pair of base members disposed on both sides of the LED module and on which the first circuit portion and the second circuit portion are mounted,
Wherein the first circuit unit includes an input terminal to which the external AC power is applied, a transformer unit that transforms the applied AC power, and a substrate on which the transformer unit is formed and on which the input terminal is formed,
Wherein the second circuit unit includes: a rectifying unit for converting the alternating-current power supplied from the transforming unit to direct-current power; an output terminal for applying the rectified direct-current power to the LED module; an input terminal connected to the first circuit unit; And a substrate on which the input terminal is formed and on which the rectifying unit is mounted. The method according to claim 1,
Wherein the first circuit portion and the second circuit portion are electrically connected through the input wiring. The method according to claim 1,
And the second circuit unit applies power to the LED module through the output wiring. delete delete The method according to claim 1,
Wherein the first circuit part or the second circuit part is formed with at least one groove part on an outer circumferential surface of each substrate. The method according to claim 1,
Wherein an upper surface of the first circuit portion and a surface of the second circuit portion are coated with an insulating material. The method according to claim 1,
Wherein the base member includes a stopper for fixing the LED module, and a step portion on which the first circuit portion or the second circuit portion is mounted. 9. The method of claim 8,
Wherein the stopper has protrusions extending to the step portion and protruding into the base member. The method according to claim 1,
And a reflective member disposed between the first circuit unit or the second circuit unit and the LED module. The method according to claim 1,
Wherein the heat dissipating member is made of a thermally conductive plastic.

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